Once you whack the front of the log enough to crack it you follow the crack with a hatchet or wedge and slam it with the back of the axe. Snap crackle pop.
Plained them down with the edge of the saw to flatten them a bit more.
I used one six foot half on one side and cut the other six foot half into two three footers. One three footer is on the other side and I used the other three foot half to make a bench with some decking scrap. The gap between will be the doorway.